Tips to open CF file

Can't open the CF file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open CF files as well as a list of programs that support CF files.

CF file extension

File Name Sendmail Configuration Format
File Category Settings Files

The CF file is supported on 3 operating systems. Depending on your operating system, you may need different software to handle the CF files. Below is a summary of the number of programs that support and open the CF file on each system platform.

Operating systems
  • 1
  • 1
  • 2
  • 0
  • 0
  • 0

What is CF file?

The file in the CF format belongs to the Settings Files category. Additionally, the Settings Files category contains 1305 of other files. Sendmail Configuration Format appears on 3 operating systems as a functional file. The file will work on Linux, Mac OS, Windows systems, unfortunately not on others. Alternatively, you can use 3 other programs. You can use Sendmail, Unix in case Text editor cannot be used.

How to open CF file?

The most common problem when using Sendmail Configuration Format is that a specific CF is not associated with the program. Thus, when you open CF, the program selection wizard or some other program starts. How to solve such a problem?

The first thing you should do is just "doubleclick" on the CF file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Text editor

In this case, you should first verify that the Text editor application is installed on the computer. To do this, enter the name Text editor into the system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Below you will find a list of applications that support CF files.

Programs to open CF file

Remember to download programs supporting CF files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Text editor with CF files

However, it may happen that the application itself does not cause the CF file to open in the Text editor application, but you can set it manually. It is most convenient to call the context menu with the right mouse button and select Properties. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can select the desired program. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the CF file with the Text editor program.

Step 3. Update Text editor to the latest version

If, however, after binding Text editor with Sendmail Configuration Format there were still problems, you should update the program to the latest version.

Step 4. Check for the following problems with the CF file

Of course, it may happen that despite the above steps, the file still does not work. This could be due to the file itself, the cleanest issues are:

Very often, the file may be size 0 or incomplete. This suggests truncating the CF file contents when downloading or copying. The only repair option is to download the file again.
The operating system may be infected with a computer virus. A quick virus scan using an up-to-date antivirus program should clear up any doubts. Some antivirus vendors also provide free online scanners. However, it is important to scan the entire system, not only the file CF or the program directory. As a result of the scan, sometimes it is not possible to recover CF files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
This can happen especially when the program is dynamically developed and the structure of the CF files changes over time. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
There can be many reasons for the failure. The repair method must be adapted to the type of file and damage. Some programs offer the ability to automatically repair CF file corruption.
The program indicates that the file is encrypted or corrupted. The encrypted CF files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. The problem is only writing to the file, not reading it. Copying the CF file to another location will fix the problem.
This problem only occurs with more complex files. In this case, the CF file is blocked by the first application to open it. Running programs (including those in the background) should be verified. Sometimes it is necessary to wait a while before referencing the CF file again. Some anti-virus or backup software may occupy the CF file for a certain period of time. If the problem persists, restart the machine.